{"product_id":"allen-bradley-1771-nis-b-analog-input","title":"Allen-Bradley 1771-NIS\/B Analog Input","description":"\u003cp\u003eConfigured for current sourcing signal acquisition in Allen-Bradley PLC-5 systems, the \u003cstrong\u003eAllen-Bradley 1771-NIS\/B\u003c\/strong\u003e (\u003cstrong\u003e1771-NIS\u003c\/strong\u003e Analog Input Module) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1771\u003c\/strong\u003e: Universal I\/O chassis-based module platform for PLC-5 automation architectures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNI\u003c\/strong\u003e: Analog input module design classification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e: Sourcing current channel configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB\u003c\/strong\u003e: Revision hardware series designation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1771-NIS\/B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.81 lbs (0.8 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.0 x 6.0 x 10.0 in (5.1 x 15.2 x 25.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 backplane bus current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Range\u003c\/td\u003e\n\u003ctd\u003e4-20 mA current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003eIsolated current sourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHigh-Density I\/O Isolation and Backplane Determinism\u003c\/h3\u003e\n\u003cp\u003eThe 1771-NIS\/B module features channel-to-channel galvanic isolation to prevent ground loops across sensitive 4-20 mA current loops. Designed to maintain signal integrity within EtherNet\/IP and remote I\/O deterministic networks, the module conditions analog field signals directly for the PLC-5 processor without degrading backplane bus communication velocity or introducing channel cross-talk.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1771-NIS\/B module support voltage inputs directly?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1771-NIS\/B is configured exclusively for 4-20 mA current sourcing signals across its 8 isolated channels.\u003c\/p\u003e\n\u003cp\u003eQ: How does channel-to-channel isolation benefit field instrumentation signals on the 1771-NIS\/B?\u003c\/p\u003e\n\u003cp\u003eA: Channel-to-channel isolation eliminates ground potential differences between field transmitters, protecting internal analog-to-digital converters and preserving conversion accuracy.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off all backplane power to the 1771 chassis and de-energize external 4-20 mA current loops before module insertion or extraction.\u003c\/li\u003e\n\u003cli\u003eAlign the module circuit card with the top and bottom chassis slot rails, pushing firmly until the locking lever fully engages.\u003c\/li\u003e\n\u003cli\u003eTerminate shielded twisted-pair signal cables to the field wiring arm, grounding cable shields at one end only to prevent loop current interference.\u003c\/li\u003e\n\u003cli\u003eSeparate analog input wiring from AC power lines and high-voltage motor circuits to avoid electromagnetic noise pickup.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48779948884158,"sku":"1771-NIS\/B","price":93.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1771-IFF_e24a6d2c-2c52-4283-8208-3346649be167.png?v=1787541682","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1771-nis-b-analog-input","provider":"AutoOilTech Limited","version":"1.0","type":"link"}